menarche {MASS} | R Documentation

## Age of Menarche data

### Description

Proportions of female children at various ages during adolescence who have reached menarche.

### Usage

    data(menarche)

### Format

This data frame contains the following columns:

`Age`
  Average age of the group. (The groups are reasonably age homogeneous.)
`Total`
  Total number of children in the group.
`Menarche`
  Number who have reached menarche.

### Source

Milicer, H. and Szczotka, F. (1966) Age at Menarche in Warsaw girls in 1965. Human Biology 38, 199–203.

The data are also given in
Aranda-Ordaz, F.J. (1981) On two families of transformations to additivity for binary response data. Biometrika 68, 357–363.

### References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

### Examples

    mprob <- glm(cbind(Menarche, Total - Menarche) ~ Age,
                 binomial(link = probit), data = menarche)

[Package Contents]